Originally Posted by
Jon S.
As I highlighted in my original answer, you are not the first person to encounter this issue. A search of this forum, and a general internet search, will provide you with discussion threads and information.
Very broadly, your options for this specific project include: 1. get the VIN / OS to match, then tune with HPT. Once the tune is completed, then change the VIN to match the vehicle. 2. do all tuning with another software that does not require the VIN / OS to match.
Either way, you will probably require the assistance of an associate with another tuning software to help out with the VIN change issue. If you know anyone who owns EFILive or Tunercat, they could change the VIN to match the OS (at no cost), allowing you to tune the vehicle with HPT, then once you are finished tuning they could change the VIN again to match the vehicle.
This is one of those unique circumstances where a little more planning at the outset could have saved a lot of headaches after the fact.